ServerSide $_POST is empty

mgbttt

Hello.
I have a DataTable with ServerSide configuration:

$("#tablaProductos").DataTable({
"Processing": true,
"serverSide": true,
"ajax": {
"url": "ajax/datatable-productos.ajax.php",
"type": "POST"
}
});

The network headers are:
General

Request URL: http://localhost/POS_TH/ajax/datatable-productos.ajax.php
Request Method: POST
Status Code: 200 OK
Remote Address: [::1]:80
Referrer Policy: no-referrer-when-downgrade

Response-Headers

Cache-Control: no-store, no-cache, must-revalidate
Connection: Keep-Alive
Content-Encoding: gzip
Content-Length: 294
Content-Type: text/html; charset=UTF-8
Date: Fri, 22 Nov 2019 15:31:15 GMT
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Keep-Alive: timeout=5, max=83
Pragma: no-cache
Server: Apache/2.4.34 (Ubuntu)
Vary: Accept-Encoding

Request Headers

Accept: application/json, text/javascript, /; q=0.01
Accept-Encoding: gzip, deflate, br
Accept-Language: es-ES,es;q=0.9,en;q=0.8,ca;q=0.7
Connection: keep-alive
Content-Length: 1569
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Cookie: ...
Host: localhost
Origin: http://localhost
Referer: http://localhost/POS_TH/productos
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-origin
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36
X-Requested-With: XMLHttpRequest

Form Data

draw: 1
columns[0][data]: 0
columns[0][name]:
columns[0][searchable]: true
columns[0][orderable]: true
columns[0][search][value]:
columns[0][search][regex]: false
columns[1][data]: 1
columns[1][name]:
columns[1][searchable]: true
columns[1][orderable]: true
columns[1][search][value]:
columns[1][search][regex]: false
columns[2][data]: 2
columns[2][name]:
columns[2][searchable]: true
columns[2][orderable]: true
columns[2][search][value]:
columns[2][search][regex]: false
columns[3][data]: 3
columns[3][name]:
columns[3][searchable]: true
columns[3][orderable]: true
columns[3][search][value]:
columns[3][search][regex]: false
columns[4][data]: 4
columns[4][name]:
columns[4][searchable]: true
columns[4][orderable]: true
columns[4][search][value]:
columns[4][search][regex]: false
columns[5][data]: 5
columns[5][name]:
columns[5][searchable]: true
columns[5][orderable]: true
columns[5][search][value]:
columns[5][search][regex]: false
columns[6][data]: 6
columns[6][name]:
columns[6][searchable]: true
columns[6][orderable]: true
columns[6][search][value]:
columns[6][search][regex]: false
order[0][column]: 0
order[0][dir]: asc
start: 0
length: 10
search[value]:
search[regex]: false

In datatable-productos.ajax.php the code is.
var_dump($_POST);

But the response is
array(0) { }

If I use type GET and var_dump($_GET); works fine and I have all the parameters sended by Datatable.
Why??
How can I use the type POST?

Thanks in advance.

rf1234

To be honest. I don't really know why. But I took a look at my data tables definition. And I only use "POST" when I have something to post to the server ... Maybe that answers your question?!

Example for "POST":

var table = $('#tblInfomaContract').DataTable( {
    ajax: {
        url: 'actions.php?action=tblTable',
        type: 'POST',
        data: function ( d ) {
            var selected = otherTable.row( {selected: true} ); 
            if (selected.any()) {
                d.contract_id = selected.data().contract.id;
            }
        }
    },        
    columns: [           
        { data: "table.external_id" }
    ]
} );

In this example the name of the $_POST variable in PHP is "contract_id" and it contains a value. So "d.contract_id" is the posted variable.

In the next example I don't use "POST". (I think "GET" is the default anyway.) So I specified nothing. And yes: I don't need "POST" because I am not posting anything either!

var secondTable = $('#tblContractFiltr').DataTable({
    dom: "Bti",
    fixedHeader: false,
    paging: false,
    retrieve: true,
    ajax: {
        url: 'actions.php?action=tblSecondTable'
    },
    columns: [
        {  data: "filtr_name" }, ....

colin

This thread has been duplicated here - please post only once to avoid this confusion.

rf1234

@colin, that is really annoying that people post their stuff twice. I thought there was really someone not getting help for a long time. Looks like I only wasted my time. If the forum rules say that duplication isn't allowed, I suggest you block users duplicating their questions. I mean if you don't get help you can still ask again in the same post. That should be good enough, shouldn't it?

colin

@rf1234 Yep, agreed, it does waste people's time and is frustrating for everyone involved, but if it's a one-off, or an accident, I'm happy to treat it as such. But yep, if it happens frequently we warn the users and then block them should it continue. That rarely happens fortunately.